e11b709b19
Similar to R_MIPS_GPREL16 and R_MIPS_GPREL32 (D45972). If the addend of an R_PPC_PLTREL24 is >= 0x8000, it indicates that r30 is relative to the input section .got2. ``` addis 30, 30, .got2+0x8000-.L1$pb@ha addi 30, 30, .got2+0x8000-.L1$pb@l ... bl foo+0x8000@PLT ``` After linking, the relocation will be relative to the output section .got2. To compensate for the shift `address(input section .got2) - address(output section .got2) = ppc32Got2OutSecOff`, adjust by `ppc32Got2OutSecOff`: ``` addis 30, 30, .got2+0x8000-.L1+ppc32Got2OutSecOff$pb@ha addi 30, 30, .got2+0x8000-.L1+ppc32Got2OutSecOff$pb@ha$pb@l ... bl foo+0x8000+ppc32Got2OutSecOff@PLT ``` This rule applys to a relocatable link or a non-relocatable link with --emit-relocs. Reviewed By: Bdragon28 Differential Revision: https://reviews.llvm.org/D73532
42 lines
1.2 KiB
ArmAsm
42 lines
1.2 KiB
ArmAsm
# REQUIRES: ppc
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## Test addend adjustment of R_PPC_PLTREL24 when copying relocations.
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## If r_addend indicates .got2, adjust it by the local .got2's output section offset.
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# RUN: llvm-mc -filetype=obj -triple=powerpc %s -o %t.o
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# RUN: ld.lld -r %t.o %t.o -o %t
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# RUN: llvm-readobj -r %t | FileCheck %s
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# RUN: ld.lld -shared --emit-relocs %t.o %t.o -o %t.so
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# RUN: llvm-readobj -r %t.so | FileCheck %s
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# CHECK: .rela.adjust {
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# CHECK-NEXT: R_PPC_REL16_HA .got2 0x8002
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# CHECK-NEXT: R_PPC_REL16_LO .got2 0x8006
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# CHECK-NEXT: R_PPC_PLTREL24 foo 0x8000
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# CHECK-NEXT: R_PPC_PLTREL24 bar 0x8000
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# CHECK-NEXT: R_PPC_REL16_HA .got2 0x8006
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# CHECK-NEXT: R_PPC_REL16_LO .got2 0x800A
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# CHECK-NEXT: R_PPC_PLTREL24 foo 0x8004
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# CHECK-NEXT: R_PPC_PLTREL24 bar 0x8004
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# CHECK-NEXT: }
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# CHECK-NEXT: .rela.no_adjust {
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# CHECK-NEXT: R_PPC_PLTREL24 foo 0x0
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# CHECK-NEXT: R_PPC_PLTREL24 foo 0x0
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# CHECK-NEXT: }
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.section .got2,"aw"
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.long 0
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.section .adjust,"ax"
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bcl 20,30,.L0
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.L0:
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addis 30,30,.got2+0x8000-.L0@ha
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addi 30,30,.got2+0x8000-.L0@l
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## Refers to .got2+addend, adjust.
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bl foo+0x8000@plt
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bl bar+0x8000@plt
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.section .no_adjust,"ax"
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## Refers to .got, no adjustment.
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bl foo@plt
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